rectosigmoid junction

Also found in: Acronyms.

rec·to·sig·moid junc·tion

the site at which the sigmoid colon becomes the rectum; usually takes the form of an acute angle, demarcated externally by a discontinuation of appendices epiploicae, a spreading out of the teniae coli to completely encircle the rectum, and consequently, termination of the sacculations (haustrae) between the teniae.
References in periodicals archive ?
1-5) We report the case of a 25-year-old white male with a history of lifelong constipation and medical noncompliance who presented with peritonitis and was found to have idiopathic megarectum and a perforated stercoral ulcer at the rectosigmoid junction.